If all the following gases are in monoatomic form, which has greater entropy? — Thermodynamics and Thermochemistry Chemistry Question

💡 Solution & Explanation

According to the Sackur-Tetrode equation, for monoatomic gases at identical conditions, the absolute molar entropy increases with an increase in atomic mass ($S \propto \ln(m^{3/2})$). Chlorine has the highest atomic mass among the choices.